Star profile
Omega 1 Cygni
Variable starWhat is Omega 1 Cygni
Omega-1 Cygni is a blue variable giant more than nine hundred light-years away, set in one of the wings of the Northern Cross. Its surface exceeds twenty thousand degrees and pours out invisible ultraviolet light, invisible to us but recorded by space telescopes. The visible light now reaching Earth set out before the chronicles of the Cid had even been written.
Where it is and when to see it
Omega 1 Cygni lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is August, when it culminates around midnight.
- From London it never sets and culminates about 87° up.
- From New York it culminates about 82° above the horizon.
- From Sydney it culminates about 7° above the horizon.
It can be seen from anywhere north of 41° S.
It ranks no. 42 in brightness among the 137 stars of Cygnus in our catalogue. To find it, start from Deneb, the brightest: it lies about 4° away (a fist at arm's length covers about 10°).
The light you see today left it about 910 years ago.
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Astronomical data for Omega 1 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 4.94
- Distance
- 908.6 light years
- Coordinates (J2000)
- RA 307.515° · Dec 48.952°
- Catalogue
- HIP 101138 · HD 195556
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Other stars in Cygnus
Cygnus has 137 stars in Stelvia's catalogue. Here are a few of them.
- DenebAlpha Cygni1.25
- SadrGamma Cygni2.23
- AljanahEpsilon Cygni2.48
- HIP 1025714.93
- 28 Cygni4.93
- 29 Cygni4.93
- 22 Cygni4.95
- HIP 980734.98